<!DOCTYPE html>
<html>
 <head>
  <meta charset="utf-8">
  <title>登录</title>
  <style type="text/css">
   body{
    background: url(img/bground.jpg) no-repeat ;
    background-size: 100%;
   }
   #login{
    width: 560px;
    height: 380px;
    background-color: white;
    border: 1px solid whitesmoke;
    box-shadow: 10px 10px 10px cornsilk;
    position: absolute;
    left:600px;
    top: 220px;
    border-radius: 20px;
    padding: 20px 100px 20px 20px;
   }
   form{
    font-size: 17px;
    margin-top: 18px;
    margin-left: 100px;
   }
   input{
    width: 400px;
    height: 30px;
    border: 1px solid grey;
    margin-top: 5px;
    margin-bottom: 5px;
    font-size: 14px;
    border-radius: 10px;
   }
   button{
    margin-left: 140px;
    margin-top: 10px;
    width: 170px;
    height: 40px;
    border: 1px solid #F5F5DC;
    border-radius: 16px;
    background-color: beige;
   }
  </style>
 </head>
 <body>
  <div id="login">
   <img src="img/logo.png" style="width: 625px;">
   <form>
    <label for="username">用户名</label><br/>
    <input type="text" id="username" placeholder="请输入用户名" /><br/>
    <label for="password">密码</label><br/>
    <input type="text" id="password" placeholder="请输入密码" /><br/>
    <button>登录</button>
   </form>
  </div>
 </body>
</html>